Dielectric Constant Measurement of Liquids Using Nanosecond-Pulsed Signals

Abstract:

In this paper, we report a novel method to measure the dielectric constant of various liquids of limited amount. The liquid under test is sealed in a coaxial-like test device. The dielectric constant is determined by comparing the delay of a nanosecond-pulsed signal traveling through the test device with that traveling through a reference coaxial cable. The results show that the maximum error of this kind of measurement is within 15-30%, which is good enough for a semi-quantitative estimation of the dielectric constant of an unknown liquid, especially when the amount of the liquid is not enough for investigation with other existing approaches.

• Periodical: Key Engineering Materials (Volume 483)
• Pages: 755-759
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.483.755
• Online since: June 2011
• Authors: Wei Qiang Sun, Yong Yang, Sheng Yong Xu
• Keywords: Coaxial Structure, Dielectric Constant, Liquid Material, Pulse Signal

References

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